Allow ability to name unnamed global addresses in Subzero.

src/PNaClTranslator.cpp

 //===- subzero/src/PNaClTranslator.cpp - ICE from bitcode -----------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the PNaCl bitcode file to Ice, to machine code
@@ skipping 1823 matching lines @@
   default:
     break;
   }
   return BlockParserBaseClass::ParseBlock(BlockID);
 }
 
 /// Parses the module block in the bitcode file.
 class ModuleParser : public BlockParserBaseClass {
 public:
   ModuleParser(unsigned BlockID, TopLevelParser *Context)
-      : BlockParserBaseClass(BlockID, Context) {}
+      : BlockParserBaseClass(BlockID, Context),
+        FoundFirstFunctionBlock(false) {}
 
   virtual ~ModuleParser() LLVM_OVERRIDE {}
 
-protected:
+private:
+  // True if we have parsed a function block.
+  bool FoundFirstFunctionBlock;
   virtual bool ParseBlock(unsigned BlockID) LLVM_OVERRIDE;
 
   virtual void ProcessRecord() LLVM_OVERRIDE;
 };
 
 class ModuleValuesymtabParser : public ValuesymtabParser {
   ModuleValuesymtabParser(const ModuleValuesymtabParser &)
       LLVM_DELETED_FUNCTION;
   void operator=(const ModuleValuesymtabParser &) LLVM_DELETED_FUNCTION;
 
@@ skipping 38 matching lines @@
   }
   case naclbitc::GLOBALVAR_BLOCK_ID: {
     GlobalsParser Parser(BlockID, this);
     return Parser.ParseThisBlock();
   }
   case naclbitc::VALUE_SYMTAB_BLOCK_ID: {
     ModuleValuesymtabParser Parser(BlockID, this);
     return Parser.ParseThisBlock();
   }
   case naclbitc::FUNCTION_BLOCK_ID: {
+    if (!FoundFirstFunctionBlock) {
+      getTranslator().nameUnnamedGlobalAddresses(Context->getModule());
+      FoundFirstFunctionBlock = true;
+    }
     FunctionParser Parser(BlockID, this);
     return Parser.ParseThisBlock();
   }
   default:
     return BlockParserBaseClass::ParseBlock(BlockID);
   }
 }
 
 void ModuleParser::ProcessRecord() {
   const NaClBitcodeRecord::RecordVector &Values = Record.GetValues();
@@ skipping 114 matching lines @@
   if (TopLevelBlocks != 1) {
     errs() << IRFilename
            << ": Contains more than one module. Found: " << TopLevelBlocks
            << "\n";
     ErrorStatus = true;
   }
   return;
 }
 
 } // end of namespace Ice